Oklahoma Gazetteer
The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
| County | Diversity Index | |
|---|---|---|
| 1. | Texas County | 84.1 |
| 2. | Oklahoma County | 77.0 |
| 3. | Tillman County | 73.8 |
| 4. | Tulsa County | 72.9 |
| 5. | Comanche County | 72.6 |
| 6. | Harmon County | 71.6 |
| 7. | Jackson County | 71.4 |
| 8. | Cherokee County | 71.2 |
| 9. | Muskogee County | 70.0 |
| 10. | Caddo County | 68.8 |
| 11. | Adair County | 68.5 |
| 12. | Marshall County | 67.3 |
| 13. | Custer County | 65.9 |
| 14. | McCurtain County | 65.4 |
| 15. | Beaver County | 65.0 |
| 16. | Choctaw County | 64.3 |
| 17. | Love County | 63.6 |
| 18. | Okmulgee County | 63.3 |
| 19. | Sequoyah County | 62.8 |
| 20. | Harper County | 62.7 |
